The thesis is mainly about the study of digital director which is based upon the intervene of AI in the future.The thesis do believe that the digital director is AI's performance in the area of audio-visual language which itself is main body of film theory.From a rational perspective of application，a large amount of raw visual material need to be edited，since we enter into era of videography，and such intelligent editing is based upon the deeply understanding of audio-visual language and the framework of art，it can not and should not be substituted by automation，hence the intervene of AI has its significance；from a requirement of reasonableness，the thesis discuss the data structure of audio-visual language via construct a basic unit of videography and a object-oriented audio-visual language，and therefore make the possibility of AI's intervene.In addition，the thesis promote the development of audio-visual language and film theory via the study of digital director.